A platinum-doped ZnO-based LPG sensor with high sensitivity

2021 ◽  
Author(s):  
Payal Patial ◽  
Manish Deshwal
Keyword(s):  
High Sensitivity ◽  
Lpg Sensor ◽  
Doped Zno

scholarly journals High Sensitivity of NO Gas Sensors Based on Novel Ag-Doped ZnO Nanoflowers Enhanced with a UV Light-Emitting Diode

ACS Omega ◽  
2018 ◽  
Vol 3 (10) ◽  
pp. 13798-13807 ◽  
Author(s):  
You-Ting Tsai ◽  
Shoou-Jinn Chang ◽  
Liang-Wen Ji ◽  
Yu-Jen Hsiao ◽  
I-Tseng Tang ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Uv Light ◽  
Light Emitting Diode ◽  
High Sensitivity ◽  
Light Emitting ◽  
Doped Zno

Sensing of Ethanol with Nanosize FeZnO Thin Films

2008 ◽  
Vol 47-50 ◽  
pp. 1117-1120
Author(s):  
G.H. Kuo ◽  
H. Paul Wang ◽  
H.H. Hsu ◽  
Chih Ju G. Jou ◽  
Y.M. Chiu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
High Sensitivity ◽  
Zno Thin Films ◽  
X Ray ◽  
Doped Zno ◽  
Low Sensitivity ◽  
X Ray Absorption ◽  
Exafs Spectra

In the present work, sensing of ethanol on the ZnO thin films doped with Fe (5-50%) have been investigated. Nature of the sensing species in the nanosize Fe-doped ZnO (FeZnO) thin films has also been studied by in situ extended X-ray absorption fine structure (EXAFS) spectroscopy. By XRD, it is found that ZnO and ZnFe2O4 are the main compounds in the ZnO-Fe thin films. The thin film containing 5% of Fe has a high sensitivity (Rair/Rethanol>80) when sensing of ethanol at 300 K. On the contrary, the thin films with Fe fractions of 20-50% have a very low sensitivity to ethanol (Rair/Rethanol<15). In the presence of ethanol, the EXAFS spectra show that the bond distances of Zn-O and Fe-O in the thin films are 1.90 and 1.98 Å, respectively and restored to 1.91 and 1.97 Å in the absence of ethanol.

Highly Sensitive Picric Acid Chemical Sensor Based on Samarium (Sm) Doped ZnO Nanorods

2019 ◽  
Vol 19 (6) ◽  
pp. 3637-3642 ◽  
Author(s):  
Yas Al-Hadeethi ◽  
Ahmad Umar ◽  
Kulvinder Singh ◽  
Ahmed A Ibrahim ◽  
Saleh. H Al-Heniti ◽  
...  
Keyword(s):  
Large Scale ◽  
Chemical Sensor ◽  
Limit Of Detection ◽  
Picric Acid ◽  
Zno Nanorods ◽  
Hydrothermal Process ◽  
High Sensitivity ◽  
Highly Sensitive ◽  
Doped Zno ◽  
Facile Hydrothermal Process

Herein, we report the synthesis, characterization and picric acid chemical sensing application of samarium (Sm) doped ZnO nanorods. The Sm-doped ZnO nanorods were synthesized by facile hydrothermal process and characterized using various analytical methods which confirmed the large-scale synthesis and wurtzite hexagonal crystal structure for the synthesized nanorods. The doping of Sm ions in the lattices of the synthesized nanorods was evaluated by the energy dispersive X-ray spectroscopy (EDS). The synthesized Sm-doped ZnO nanorods were used as potential scaffold to fabricate high sensitive and reproducible picric acid chemical sensor based on I–V technique. The fabricated picric acid chemical sensor based on Sm-doped ZnO nanorods exhibited a high sensitivity of 213.9 mA mM−1 cm−2 with the limit of detection of ∼0.228 mM and correlation coefficient of R═0.9889. The obtained results revealed that the facile grown Sm-doped ZnO nanorods can efficiently be used to fabricate high sensitive and reproducible chemical sensors.

scholarly journals High sensitivity ethanol gas sensor based on Sn - doped ZnO under visible light irradiation at low temperature

2014 ◽  
Vol 17 (4) ◽  
pp. 817-822 ◽  
Author(s):  
Peishuo Zhang ◽  
Guofeng Pan ◽  
Bingqiang Zhang ◽  
Jiali Zhen ◽  
Yicai Sun
Keyword(s):  
Low Temperature ◽  
Visible Light ◽  
Gas Sensor ◽  
Visible Light Irradiation ◽  
High Sensitivity ◽  
Light Irradiation ◽  
Doped Zno

Electrical Characteristic of UV Sensor Using Nanostructured Al Doped ZnO Thin Film

2013 ◽  
Vol 667 ◽  
pp. 384-387
Author(s):  
Mohamed Zahidi Musa ◽  
Mohamad Hafiz Mamat ◽  
Mohamad Rusop
Keyword(s):  
Absorption Coefficient ◽  
Near Infrared ◽  
Uv Light ◽  
Light Exposure ◽  
Sol Gel ◽  
High Sensitivity ◽  
Fast Response ◽  
Uv Sensor ◽  
Coating Method ◽  
Doped Zno

The electrical properties of nanostructured Aluminum (Al) doped Zinc Oxide (ZnO) thin films based ultraviolet (UV) sensor prepared by sol-gel spin-coating method have been investigated. Uniform nanoparticles Al doped ZnO have been deposited with high absorption coefficient at UV region and low absorption coefficient properties in visible and near-infrared (NIR) region. I-V spectra show high sensitivity characteristic of UV sensor with fast response after UV light exposure.

Hydrothermal synthesis of Co–ZnO nanowire array and its application as piezo-driven self-powered humidity sensor with high sensitivity and repeatability

RSC Advances ◽  
2015 ◽  
Vol 5 (102) ◽  
pp. 84343-84349 ◽  
Author(s):  
Weili Zang ◽  
Pan Li ◽  
Yongming Fu ◽  
Lili Xing ◽  
Xinyu Xue
Keyword(s):  
Active Sites ◽  
High Performance ◽  
Humidity Sensor ◽  
Coupling Effect ◽  
Nanowire Array ◽  
High Sensitivity ◽  
Zno Nanowire ◽  
Doped Zno ◽  
Self Powered ◽  
Co Doped

Self-powered humidity sensor with high sensitivity and repeatability has been fabricated from Co-doped ZnO NW arrays. Such a high performance can be attributed to the piezo-surface coupling effect and more active sites introduced by the Co dopants.

Ga-doped ZnO nanowire nanogenerator as self-powered/active humidity sensor with high sensitivity and fast response

2015 ◽  
Vol 648 ◽  
pp. 571-576 ◽  
Author(s):  
Tianming Zhao ◽  
Yongming Fu ◽  
Yayu Zhao ◽  
Lili Xing ◽  
Xinyu Xue
Keyword(s):  
Humidity Sensor ◽  
High Sensitivity ◽  
Fast Response ◽  
Zno Nanowire ◽  
Doped Zno ◽  
Self Powered

scholarly journals Structural, Morphological, and LPG Sensing Properties of Al-Doped ZnO Thin Film Prepared by SILAR

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Shampa Mondal ◽  
Shatabda Bhattacharya ◽  
P. Mitra
Keyword(s):  
Thin Films ◽  
Texture Coefficient ◽  
Spherical Shape ◽  
High Sensitivity ◽  
Fast Response ◽  
Axis Orientation ◽  
Glass Substrates ◽  
Morphological Studies ◽  
Sem Micrograph ◽  
Doped Zno

Undoped and aluminum doped zinc oxide (AZO) thin films were deposited on glass substrates by successive ion layer adsorption and reaction (SILAR) technique from ammonium zincate complex. The thin films are characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) for their structural and morphological studies. Both undoped andAl-doped film show strong preferred c-axis orientation. The texture coefficient (TC) of the film along (002) direction increases due to Al incorporation. SEM micrograph shows round shaped particles for pure ZnO. However AZO films show particles with off spherical shape and compact interconnected grains. Sensitivity of the film in presence of 80% LEL (lower explosive limit) of LPG increases with temperature and is maximum at 325°C. Significantly high sensitivity of 87% with reasonably fast response was observed for 1%Al-doped ZnO (AZO) film in presence of 1.6 vol% LPG at 325°C.

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